int led = 7;
int buttonGreen = 3;
int buttonRed = 4;


void setup() {
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  pinMode(buttonGreen, INPUT);
  pinMode(buttonRed, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(buttonGreen) == LOW){
    digitalWrite(led, LOW);
  }
  else if(digitalRead(buttonRed) == LOW){
    digitalWrite(led, HIGH);
  }

}